air-core coil

air-core coil

[′er ‚kȯr ‚kȯil]
(electronics)
An inductor without a magnetic core.
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References in periodicals archive ?
A moving air-core coil configuration eliminates cogging effects cause by moving magnet configurations, and the translation motion is governed by the deflection stiffness of the flexure-based bearings.
Both tanks are deployed using similar (+/- 5%) L and C values, similar air-core coil design, have the same coupling inductance and coupling coefficient.
However, although they commonly are used at RF frequencies, air-core coils have low inductance, so for practical reasons many larger inductors, such as those used in power supplies, are wound on a magnetic core.